[qa] Move gen_return_txouts() to util.py

qa/rpc-tests/maxuploadtarget.py

@@ -85,22 +85,7 @@ class TestNode(NodeConnCB):
 class MaxUploadTest(BitcoinTestFramework):
     def __init__(self):
         self.utxo = []
-
+        self.txouts = gen_return_txouts()
-        # Some pre-processing to create a bunch of OP_RETURN txouts to insert into transactions we create
-        # So we have big transactions and full blocks to fill up our block files
-        # create one script_pubkey
-        script_pubkey = "6a4d0200" #OP_RETURN OP_PUSH2 512 bytes
-        for i in xrange (512):
-            script_pubkey = script_pubkey + "01"
-        # concatenate 128 txouts of above script_pubkey which we'll insert before the txout for change
-        self.txouts = "81"
-        for k in xrange(128):
-            # add txout value
-            self.txouts = self.txouts + "0000000000000000"
-            # add length of script_pubkey
-            self.txouts = self.txouts + "fd0402"
-            # add script_pubkey
-            self.txouts = self.txouts + script_pubkey
  
     def add_options(self, parser):
         parser.add_option("--testbinary", dest="testbinary",

qa/rpc-tests/mempool_limit.py

@@ -11,21 +11,7 @@ from test_framework.util import *
 class MempoolLimitTest(BitcoinTestFramework):
 
     def __init__(self):
-        # Some pre-processing to create a bunch of OP_RETURN txouts to insert into transactions we create
+        self.txouts = gen_return_txouts()
-        # So we have big transactions (and therefore can't fit very many into each block)
-        # create one script_pubkey
-        script_pubkey = "6a4d0200" #OP_RETURN OP_PUSH2 512 bytes
-        for i in xrange (512):
-            script_pubkey = script_pubkey + "01"
-        # concatenate 128 txouts of above script_pubkey which we'll insert before the txout for change
-        self.txouts = "81"
-        for k in xrange(128):
-            # add txout value
-            self.txouts = self.txouts + "0000000000000000"
-            # add length of script_pubkey
-            self.txouts = self.txouts + "fd0402"
-            # add script_pubkey
-            self.txouts = self.txouts + script_pubkey
 
     def setup_network(self):
         self.nodes = []

qa/rpc-tests/prioritise_transaction.py

@@ -15,21 +15,7 @@ COIN = 100000000
 class PrioritiseTransactionTest(BitcoinTestFramework):
 
     def __init__(self):
-        # Some pre-processing to create a bunch of OP_RETURN txouts to insert into transactions we create
+        self.txouts = gen_return_txouts()
-        # So we have big transactions (and therefore can't fit very many into each block)
-        # create one script_pubkey
-        script_pubkey = "6a4d0200" #OP_RETURN OP_PUSH2 512 bytes
-        for i in xrange (512):
-            script_pubkey = script_pubkey + "01"
-        # concatenate 128 txouts of above script_pubkey which we'll insert before the txout for change
-        self.txouts = "81"
-        for k in xrange(128):
-            # add txout value
-            self.txouts = self.txouts + "0000000000000000"
-            # add length of script_pubkey
-            self.txouts = self.txouts + "fd0402"
-            # add script_pubkey
-            self.txouts = self.txouts + script_pubkey
 
     def setup_chain(self):
         print("Initializing test directory "+self.options.tmpdir)

qa/rpc-tests/pruning.py

@@ -23,24 +23,7 @@ class PruneTest(BitcoinTestFramework):
     def __init__(self):
         self.utxo = []
         self.address = ["",""]
-
+        self.txouts = gen_return_txouts()
-        # Some pre-processing to create a bunch of OP_RETURN txouts to insert into transactions we create
-        # So we have big transactions and full blocks to fill up our block files
-
-        # create one script_pubkey
-        script_pubkey = "6a4d0200" #OP_RETURN OP_PUSH2 512 bytes
-        for i in xrange (512):
-            script_pubkey = script_pubkey + "01"
-        # concatenate 128 txouts of above script_pubkey which we'll insert before the txout for change
-        self.txouts = "81"
-        for k in xrange(128):
-            # add txout value
-            self.txouts = self.txouts + "0000000000000000"
-            # add length of script_pubkey
-            self.txouts = self.txouts + "fd0402"
-            # add script_pubkey
-            self.txouts = self.txouts + script_pubkey
-
 
     def setup_chain(self):
         print("Initializing test directory "+self.options.tmpdir)

qa/rpc-tests/test_framework/util.py

@@ -436,6 +436,24 @@ def create_confirmed_utxos(fee, node, count):
     assert(len(utxos) >= count)
     return utxos
 
+def gen_return_txouts():
+    # Some pre-processing to create a bunch of OP_RETURN txouts to insert into transactions we create
+    # So we have big transactions (and therefore can't fit very many into each block)
+    # create one script_pubkey
+    script_pubkey = "6a4d0200" #OP_RETURN OP_PUSH2 512 bytes
+    for i in xrange (512):
+        script_pubkey = script_pubkey + "01"
+    # concatenate 128 txouts of above script_pubkey which we'll insert before the txout for change
+    txouts = "81"
+    for k in xrange(128):
+        # add txout value
+        txouts = txouts + "0000000000000000"
+        # add length of script_pubkey
+        txouts = txouts + "fd0402"
+        # add script_pubkey
+        txouts = txouts + script_pubkey
+    return txouts
+
 def create_lots_of_big_transactions(node, txouts, utxos, fee):
     addr = node.getnewaddress()
     txids = []